US4883250A - Vibration-proof and earthquake-immue mount system - Google Patents

Vibration-proof and earthquake-immue mount system Download PDF

Info

Publication number
US4883250A
US4883250A US07/166,441 US16644188A US4883250A US 4883250 A US4883250 A US 4883250A US 16644188 A US16644188 A US 16644188A US 4883250 A US4883250 A US 4883250A
Authority
US
United States
Prior art keywords
foundation
mount system
conductor plate
vibration
electromagnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/166,441
Other languages
English (en)
Inventor
Kenichi Yano
Hiroshi Midorikawa
Toshiaki Kamei
Takeharu Shizume
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kajima Corp
KYB Corp
Original Assignee
Kajima Corp
Kayaba Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kajima Corp, Kayaba Industry Co Ltd filed Critical Kajima Corp
Assigned to KAYABA INDUSTRY CO., LTD., KAJIMA CORPORATION reassignment KAYABA INDUSTRY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KAMEI, TOSHIAKI, MIDORIKAWA, HIROSHI, SHIZUME, TAKEHARU, YANO, KENICHI
Application granted granted Critical
Publication of US4883250A publication Critical patent/US4883250A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • E04H9/0235—Anti-seismic devices with hydraulic or pneumatic damping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/021—Decoupling of vibrations by means of point-of-contact supports, e.g. ball bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
    • F16F15/035—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means by use of eddy or induced-current damping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/14—Ball joints; Spherical support elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S52/00—Static structures, e.g. buildings
    • Y10S52/04—Magnetic connecting means for building components

Definitions

  • the present invention relates to a vibration-proof and earthquake-immune mount system for machinery or buildings, and in particular to a mount system which can deal with horizontal vibrations and earthquakes of unpredictable direction.
  • Vibration-proof and earthquake-immune mounts which utilize vibration-proof springs or rubber are well known. Such mounts have usually been disposed between a movable component such as machinery or flooring and a stationary component such as machinery foundations or building foundations, respectively, to convert disturbing vibrations such as traffic vibration, construction work vibration, and earthquakes into a gentle movement of a relatively long period.
  • the prior art has utilized hydraulic dampers or the like by which vibration energy is converted to other energy forces such as heat to achieve a desired vibration absorption.
  • a principal object of the present invention is to provide an improved vibration-proof and earthquake-immune mount which can deal with the horizontal vibration occurring in all directions without the need for a plurality of mounts.
  • Another object of the present invention is to provide a mount which can effectively simplified and miniaturized and also counteracts vibrations from earthquakes of unpredictable direction.
  • the present invention proposes a vibration-proof and earthquake-immune mount system comprising a mouth with rollable spheres and a saucer having a conical or circular arc-shaped recess adapted to receive a rollable sphere.
  • This mount is combined with a damper consisting of a magnetic body and a conductor plate, capable of being damped by the magnetic force developed by the magnetic body.
  • a disturbing vibration is converted by the sphere rolling on the saucer to a gentle movement of longer period and this conversion is obtained with an adequate and effective ratio independent of the direction in which the vibration occurs, since the sphere can roll in all directions.
  • Displacements larger than a predetermined amount are restrained by the damper, permitting a fine control to be achieved independent of the direction, since the damper controls the conductor plate by means of magnetic force.
  • FIG. 1 is a side view showing one embodiment of the vibration-proof and earthquake-immune mount system constructed according to the present invention, comprising, typically, two mounts and one damper;
  • FIG. 2 is a partially sectioned side view showing details of one mount
  • FIG. 3 is a perspective view showing the damper used in the mount system.
  • FIG. 4 is a perspective view showing the connecting structure for the conductor plate which is part of the damper of FIG. 3.
  • FIG. 2 illustrates an embodiment of the vibration-proof and earthquake-immune mount 3 constructed according to the present invention.
  • Reference numeral 1 designates a movable component such as machinery and reference numeral 2 designates a stationary component such as a foundation with a typical mount 3 located between machinery 1 and foundation 2.
  • Mount 3 includes an air spring 32 having a ring 31, at the intermediate drum portion thereof, and is secured to a bottom surface of machinery 1.
  • a support 33 is mounted on the lower end of air spring 32.
  • Support 33 contains a multiplicity of steel balls 34, each of relatively small diameter riding on the upper surface of a rollable steel ball 35 of larger diameter with its lower portion protruding from support 33.
  • the lower portion of ball 35 rollably contacts conical recess 36 which forms the upper surface of thick walled saucer 37 which is mounted on foundation 2 by a protrusion 38 extending from the bottom surface of saucer 37.
  • a dam 39 projects radially from the periphery of conical recess 36 to prevent ball 35 from rolling out of saucer 37.
  • the single larger-diameter steel ball 35 may be replaced by a plurality of smaller-diameter balls, not shown, and the ball material is not limited to a metal such as steel.
  • the saucer 37 also may have a circular arc-shaped recess rather than a conical one and the saucer material is not limited to a metal. Other embodiments may be used without departing from the spirit and scope of this invention.
  • FIG. 1 shows a typical mount system according to the present invention, comprising two exemplars of mount 3, the details of which are shown in FIG. 2 and described above, in combination with a magnetic damper 4.
  • This damper 4 includes an electromagnet 41 disposed within a frame structure, in the form of a split member defined by one or more coils and having north and south poles, the electromagnet 41 being mounted on foundation 2; a connector 43 such as a connecting bar mounted on the bottom surface of machinery 1; and a conductor plate 42 formed of sheet metal or the like connected to the connector 43 in such a manner that conductor plate 42 is slidable relative to a vertical movement and the free end thereof is interposed between the north and south poles of electromagnet 41.
  • An accelerometer, a velocimeter or a vectormeter 5 serving as a sensor is, in turn, connected to a controller 6 for the electromagnet 41.
  • FIGS. 3 and 4 show details of how conductor plate 42 can slide between the poles of magnetic 41, and how connector plate 42 is connected to connector 43 so as to be vertically slidable, respectively.
  • the larger-diameter steel ball 35 is centrally positioned on the conical recess 36 so as to support machinery 1 on foundation 2.
  • the larger-diameter steel ball 35 having its frictional force reduced by the smaller-diameter steel balls 34 rolls smoothly on the surface of conical recess 36 so as to convert the disturbing vibration to a gentle movement of a longer period.
  • the effectiveness of the mount 3 in converting the incident vibration to a layer period increases as the friction coefficient between saucer 37 and steel ball 35 as well as the gradient of recess 36 decrease.
  • the relative displacement of foundation 2 and machinery 1 may unacceptably increase as the effectiveness, i.e., the vibration attenuating effect, increases. Accordingly, the relative displacement must be suppressed before it exceeds a predetermined amount.
  • Sensor 5 detects when the displacement of machinery 1 relative to foundation 2 attains the predetermined amount and causes controller 6 to energize the electromagnet 41, causing it to develop a magnetic field.
  • controller 6 has been described as the current controller for the electromagnet 41, it should be understood that a permanent magnet may be employed in the damper 4.
  • a mechanical controller will be provided with a feedback mechanism to control the position of conductor plate 42 relative to the permanent magnet until the displacement thereof exceeds a predetermined amount.
  • the present invention has been described hereinabove in terms of an embodiment as a vibration-proof and earthquake-immune mount system particularly for machinery, the present invention is applicable also to buildings and other structures as a vibration-proof and earthquake-immune mount system for an entire building or floor.
  • the vibration-proof and earthquake-immune mount system of this invention effectively converts a disturbing vibration to a gentle movement of a longer period, utilizing reciprocating frictionless rolling of the sphere on the saucer and independent of the direction in which the disturbing vibration is propagated.
  • the present invention includes a damper utilizing the magnetic effect in combination with the mount to prevent an excessively large amount of relative displacement.
  • the mount can deal with an earthquake or a collision vibration of which the propagation direction is unpredictable, since the damper of this invention is also effective independent of the orientation of the earthquake or other disturbing vibration.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Electromagnetism (AREA)
  • Vibration Prevention Devices (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
US07/166,441 1987-03-12 1988-03-10 Vibration-proof and earthquake-immue mount system Expired - Fee Related US4883250A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62058587A JPS63223244A (ja) 1987-03-12 1987-03-12 防振、免震装置
JP62-58587 1987-03-12

Publications (1)

Publication Number Publication Date
US4883250A true US4883250A (en) 1989-11-28

Family

ID=13088606

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/166,441 Expired - Fee Related US4883250A (en) 1987-03-12 1988-03-10 Vibration-proof and earthquake-immue mount system

Country Status (3)

Country Link
US (1) US4883250A (en])
JP (1) JPS63223244A (en])
NZ (1) NZ223743A (en])

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4953658A (en) * 1989-06-07 1990-09-04 Ohbayashi Corporation Seismic isolator
US4974378A (en) * 1989-12-29 1990-12-04 Shustov Valentin N Seismic-isolator
US5056280A (en) * 1990-09-12 1991-10-15 Shustov Valentin N Multi-step base isolator
US5064155A (en) * 1990-02-28 1991-11-12 Convault, Inc. Tank stabilizer
US5075857A (en) * 1988-03-11 1991-12-24 Maresca Joseph S Unmanned compliance monitoring device
EP0439272A3 (en) * 1990-01-20 1992-01-02 Sumitomo Gomu Kogyo Kabushiki Kaisha Vibration-proofing device
FR2665211A1 (fr) * 1989-12-12 1992-01-31 Emmanuel Emile Michel Systeme anti-sismique, "saturne".
EP0536044A1 (en) * 1991-10-03 1993-04-07 Fujitsu Limited Earthquake-proof leg support structure of electronic apparatus
US5261200A (en) * 1990-01-20 1993-11-16 Sumitomo Gomu Kogyo Kabushiki Kaisha Vibration-proofing device
US5271217A (en) * 1992-12-09 1993-12-21 General Electric Company Mounting arrangement for a single shaft combined cycle system
US5657597A (en) * 1995-04-11 1997-08-19 Environmental Building Technology, Ltd. Building construction method
US5689919A (en) * 1995-09-21 1997-11-25 Kajima Corporation Base isolated building of wind resisting type
EP0823517A1 (en) * 1996-08-06 1998-02-11 A.L.G.A. Applicazione Lavorazione Giunti Appoggi S.p.A. An antiseismic energy dissipator for structures such as viaducts and the like
US5765800A (en) * 1995-10-04 1998-06-16 Ebara Corporation Vibration damping apparatus
US5964066A (en) * 1995-03-17 1999-10-12 Mori; Kuninori Earthquake-proof foundation
US5979127A (en) * 1996-10-04 1999-11-09 Yoneda; Ryozo Earthquake-proof object support device
US6115972A (en) * 1996-04-09 2000-09-12 Tamez; Federico Garza Structure stabilization system
US6123313A (en) * 1997-06-25 2000-09-26 Okumura Corporation Seismic isolation apparatus
US6164022A (en) * 1997-09-04 2000-12-26 Thk Co., Ltd. Three dimensional guide
US6364274B1 (en) * 1999-11-18 2002-04-02 Mitsubishi Steel Mfg. Co., Ltd. Seismic isolator for exhibits
US6505806B1 (en) * 2000-05-09 2003-01-14 Husky Injection Molding Systems, Ltd. Dynamic machine mount
US6572071B1 (en) * 2001-11-16 2003-06-03 Chung-Shien Tsai Shock eliminator
US6662506B2 (en) 2000-07-10 2003-12-16 Gregor D. Fischer Collapse-resistant frame system for structures
US6694690B2 (en) 2000-07-10 2004-02-24 The Regents Of The University Of Michigan Concrete constructions employing the use of a ductile strip
US6809131B2 (en) 2000-07-10 2004-10-26 The Regents Of The University Of Michigan Self-compacting engineered cementitious composite
US20050045796A1 (en) * 2003-07-31 2005-03-03 Atsuhiko Kobayashi Vibration damping floor structure
US6895870B1 (en) 2002-11-04 2005-05-24 F. Peter Bizlewicz Apparatus and method for stacking plural electronic and electro-acoustic components
US20050257451A1 (en) * 2004-05-18 2005-11-24 Pryor Steven E Moment frame links wall
US20060005477A1 (en) * 2002-08-06 2006-01-12 Hong Yang Earthquake resistance structure for building
US20060260221A1 (en) * 2002-07-15 2006-11-23 Worksafe Technologies Isolation platform
US20070131830A1 (en) * 2005-12-14 2007-06-14 Northrop Grumman Corporation Variable temperature magnetic damper
US20070131504A1 (en) * 2005-12-14 2007-06-14 Northrop Grumman Corporation Planar vibration absorber
US20070233390A1 (en) * 2006-02-24 2007-10-04 Freund Friedemann T Current generation and earthquake prediction
US20070283635A1 (en) * 2006-06-13 2007-12-13 Jong-Seh Lee Seismic control bearing device and seismic control system including the same
US20080066398A1 (en) * 2004-10-04 2008-03-20 Hiroyasu Tubota System for Buffering Horizontal Acceleration Acting on Structural Member and Position Returning Unit
US20080078633A1 (en) * 2006-08-08 2008-04-03 Chong-Shien Tsai Shock suppressor
US20080098671A1 (en) * 2006-10-31 2008-05-01 Chong-Shien Tsai Shock suppressor
US20080163559A1 (en) * 2007-01-05 2008-07-10 Lee Frank A Electromagnetically reinforced structural assembly and associated method
ITCS20090001A1 (it) * 2009-01-09 2010-07-10 Valentino Valentini Gruppo di trasporto ad attrito controllato ed a snodo oleodinamico per impiego in trasporto pesante o per isolamento sismico.
US20110037209A1 (en) * 2009-08-11 2011-02-17 Ruentex Engineering & Construction Co., Ltd. Vibration Damping Construction System
US20110308175A1 (en) * 2010-06-22 2011-12-22 Chyuang-Jong Wu Buildings seismic isolation and snubber system for a seismic isolation mechanism instantly activated
US20140175256A1 (en) * 2011-06-17 2014-06-26 Kikuo Sugita Method for preventing overturn of trestle
US20140345210A1 (en) * 2011-11-21 2014-11-27 Giuseppe Gentili Seismic dissipation module made up of compression-resistant spheres immersed in a variable low density material
US9145702B2 (en) * 2013-02-06 2015-09-29 Raytheon Company Friction damping mechanism for damped beams and other structures
CN105805489A (zh) * 2016-05-18 2016-07-27 浙江工业职业技术学院 一种磁悬浮式机械设备减震腿
US20170007021A1 (en) * 2014-01-24 2017-01-12 Girardini S.R.L. Dissipator
US9739336B2 (en) 2014-08-13 2017-08-22 Northrop Grumman Systems Corporation Magnetically damped isolator and pointing mount
US20180283487A1 (en) * 2015-09-30 2018-10-04 Mitsubishi Electric Corporation Base isolation unit and base isolation apparatus
US20190145066A1 (en) * 2016-04-15 2019-05-16 Oiles Corporation Seismic isolation bearing for bridge and bridge using the same
US20190301193A1 (en) * 2018-04-03 2019-10-03 Lief MacTavish System and method to reduce accelerations experienced by objects in variable acceleration environments

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03249445A (ja) * 1990-02-27 1991-11-07 Mitsubishi Steel Mfg Co Ltd 小構造物用簡易免震装置
US5599106A (en) * 1994-02-09 1997-02-04 Tekton Ball-in-cone seismic isolation bearing
JP5100279B2 (ja) * 2007-09-25 2012-12-19 株式会社ナベヤ 除振マウント
JP6148435B2 (ja) * 2012-04-20 2017-06-14 株式会社東芝 燃料交換機
JP5588037B2 (ja) * 2013-03-25 2014-09-10 有限会社共栄製作所 アーチェリー用プランジャー

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2055000A (en) * 1935-08-12 1936-09-22 Bacigalupo Joseph Building construction
US2414506A (en) * 1943-06-24 1947-01-21 Bendix Home Appliances Inc Washing machine support structure
US3771270A (en) * 1971-12-13 1973-11-13 J Byers Self-centering horizontally translatable support/hold-down apparatus for building structures and the like
US4496130A (en) * 1981-02-25 1985-01-29 Jun Toyama Support device
US4662133A (en) * 1984-10-30 1987-05-05 Kabushiki Kaisha Toshiba Floor system for seismic isolation
US4699348A (en) * 1983-04-20 1987-10-13 Tillmann Freudenberg Electro-magnetic vibration-damping mount
US4726161A (en) * 1987-02-26 1988-02-23 Yaghoubian Nejde F Earthquake isolating support

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS527852A (en) * 1975-07-09 1977-01-21 Nippon Steel Corp High corrosion resistance steel for automobile gasoline tank
JPS5541608U (en]) * 1978-09-11 1980-03-17
JPH033724Y2 (en]) * 1985-04-24 1991-01-30

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2055000A (en) * 1935-08-12 1936-09-22 Bacigalupo Joseph Building construction
US2414506A (en) * 1943-06-24 1947-01-21 Bendix Home Appliances Inc Washing machine support structure
US3771270A (en) * 1971-12-13 1973-11-13 J Byers Self-centering horizontally translatable support/hold-down apparatus for building structures and the like
US4496130A (en) * 1981-02-25 1985-01-29 Jun Toyama Support device
US4699348A (en) * 1983-04-20 1987-10-13 Tillmann Freudenberg Electro-magnetic vibration-damping mount
US4662133A (en) * 1984-10-30 1987-05-05 Kabushiki Kaisha Toshiba Floor system for seismic isolation
US4726161A (en) * 1987-02-26 1988-02-23 Yaghoubian Nejde F Earthquake isolating support

Cited By (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5075857A (en) * 1988-03-11 1991-12-24 Maresca Joseph S Unmanned compliance monitoring device
US4953658A (en) * 1989-06-07 1990-09-04 Ohbayashi Corporation Seismic isolator
FR2665211A1 (fr) * 1989-12-12 1992-01-31 Emmanuel Emile Michel Systeme anti-sismique, "saturne".
US4974378A (en) * 1989-12-29 1990-12-04 Shustov Valentin N Seismic-isolator
US5261200A (en) * 1990-01-20 1993-11-16 Sumitomo Gomu Kogyo Kabushiki Kaisha Vibration-proofing device
EP0439272A3 (en) * 1990-01-20 1992-01-02 Sumitomo Gomu Kogyo Kabushiki Kaisha Vibration-proofing device
US5064155A (en) * 1990-02-28 1991-11-12 Convault, Inc. Tank stabilizer
US5056280A (en) * 1990-09-12 1991-10-15 Shustov Valentin N Multi-step base isolator
US5310156A (en) * 1991-10-03 1994-05-10 Fujitsu Limited Earthquake-proof leg support structure of electronic apparatus
EP0536044A1 (en) * 1991-10-03 1993-04-07 Fujitsu Limited Earthquake-proof leg support structure of electronic apparatus
US5271217A (en) * 1992-12-09 1993-12-21 General Electric Company Mounting arrangement for a single shaft combined cycle system
US5964066A (en) * 1995-03-17 1999-10-12 Mori; Kuninori Earthquake-proof foundation
US5657597A (en) * 1995-04-11 1997-08-19 Environmental Building Technology, Ltd. Building construction method
US5689919A (en) * 1995-09-21 1997-11-25 Kajima Corporation Base isolated building of wind resisting type
US5765800A (en) * 1995-10-04 1998-06-16 Ebara Corporation Vibration damping apparatus
EP0767320A3 (en) * 1995-10-04 1999-07-14 Ebara Corporation Vibration damping apparatus
US6115972A (en) * 1996-04-09 2000-09-12 Tamez; Federico Garza Structure stabilization system
EP0823517A1 (en) * 1996-08-06 1998-02-11 A.L.G.A. Applicazione Lavorazione Giunti Appoggi S.p.A. An antiseismic energy dissipator for structures such as viaducts and the like
US5918339A (en) * 1996-08-06 1999-07-06 A. L. G. A. Applicazione Lavorazione Giunti Appoggi S.P.A. Antiseismic energy dissipator for structures such as viaducts and the like
US5979127A (en) * 1996-10-04 1999-11-09 Yoneda; Ryozo Earthquake-proof object support device
US6123313A (en) * 1997-06-25 2000-09-26 Okumura Corporation Seismic isolation apparatus
US6164022A (en) * 1997-09-04 2000-12-26 Thk Co., Ltd. Three dimensional guide
US6364274B1 (en) * 1999-11-18 2002-04-02 Mitsubishi Steel Mfg. Co., Ltd. Seismic isolator for exhibits
US6505806B1 (en) * 2000-05-09 2003-01-14 Husky Injection Molding Systems, Ltd. Dynamic machine mount
US6662506B2 (en) 2000-07-10 2003-12-16 Gregor D. Fischer Collapse-resistant frame system for structures
US6694690B2 (en) 2000-07-10 2004-02-24 The Regents Of The University Of Michigan Concrete constructions employing the use of a ductile strip
US6809131B2 (en) 2000-07-10 2004-10-26 The Regents Of The University Of Michigan Self-compacting engineered cementitious composite
US6572071B1 (en) * 2001-11-16 2003-06-03 Chung-Shien Tsai Shock eliminator
US7784225B2 (en) * 2002-07-15 2010-08-31 Worksafe Technologies Isolation platform
US20060260221A1 (en) * 2002-07-15 2006-11-23 Worksafe Technologies Isolation platform
US20060005477A1 (en) * 2002-08-06 2006-01-12 Hong Yang Earthquake resistance structure for building
US7540117B2 (en) * 2002-08-06 2009-06-02 Hong Yang Vibration isolation system for building
US6895870B1 (en) 2002-11-04 2005-05-24 F. Peter Bizlewicz Apparatus and method for stacking plural electronic and electro-acoustic components
US7188820B2 (en) * 2003-07-31 2007-03-13 Hitachi Kizai, Inc. Vibration damping floor structure
US20050045796A1 (en) * 2003-07-31 2005-03-03 Atsuhiko Kobayashi Vibration damping floor structure
US20050257451A1 (en) * 2004-05-18 2005-11-24 Pryor Steven E Moment frame links wall
US11346102B2 (en) 2004-05-18 2022-05-31 Simpson Strong-Tie Company Inc. Moment frame links wall
US8763319B2 (en) 2004-05-18 2014-07-01 Simpson Strong-Tie Company Inc. Moment frame links wall
US8001734B2 (en) * 2004-05-18 2011-08-23 Simpson Strong-Tie Co., Inc. Moment frame links wall
US20080066398A1 (en) * 2004-10-04 2008-03-20 Hiroyasu Tubota System for Buffering Horizontal Acceleration Acting on Structural Member and Position Returning Unit
US7886489B2 (en) * 2004-10-04 2011-02-15 Hiroyasu Tubota System for buffering horizontal acceleration acting on structural member and position returning unit
US20070131830A1 (en) * 2005-12-14 2007-06-14 Northrop Grumman Corporation Variable temperature magnetic damper
US20070131504A1 (en) * 2005-12-14 2007-06-14 Northrop Grumman Corporation Planar vibration absorber
US20070233390A1 (en) * 2006-02-24 2007-10-04 Freund Friedemann T Current generation and earthquake prediction
US20070283635A1 (en) * 2006-06-13 2007-12-13 Jong-Seh Lee Seismic control bearing device and seismic control system including the same
US8122651B2 (en) * 2006-08-08 2012-02-28 Chong-Shien Tsai Shock suppressor
US20080078633A1 (en) * 2006-08-08 2008-04-03 Chong-Shien Tsai Shock suppressor
US20110016805A1 (en) * 2006-08-08 2011-01-27 Chong-Shien Tsai Shock supressor
US8161695B2 (en) 2006-08-08 2012-04-24 Chong-Shien Tsai Shock supressor
US20120096779A1 (en) * 2006-08-08 2012-04-26 Chong-Shien Tsai Shock suppressor
US20120117894A1 (en) * 2006-08-08 2012-05-17 Chong-Shien Tsai Shock suppressor
US8307586B2 (en) * 2006-08-08 2012-11-13 Chong-Shien Tsai Shock suppressor
US8365477B2 (en) * 2006-08-08 2013-02-05 Chong-Shien Tsai Shock suppressor
US20080098671A1 (en) * 2006-10-31 2008-05-01 Chong-Shien Tsai Shock suppressor
US20080163559A1 (en) * 2007-01-05 2008-07-10 Lee Frank A Electromagnetically reinforced structural assembly and associated method
ITCS20090001A1 (it) * 2009-01-09 2010-07-10 Valentino Valentini Gruppo di trasporto ad attrito controllato ed a snodo oleodinamico per impiego in trasporto pesante o per isolamento sismico.
US20110037209A1 (en) * 2009-08-11 2011-02-17 Ruentex Engineering & Construction Co., Ltd. Vibration Damping Construction System
US8429862B2 (en) * 2009-08-11 2013-04-30 Ruentex Engineering & Construction Co., Ltd. Vibration damping construction system
US20110308175A1 (en) * 2010-06-22 2011-12-22 Chyuang-Jong Wu Buildings seismic isolation and snubber system for a seismic isolation mechanism instantly activated
US8671629B2 (en) * 2010-06-22 2014-03-18 Chyuang-Jong Wu Buildings seismic isolation and snubber system for a seismic isolation mechanism instantly activated
US20140175256A1 (en) * 2011-06-17 2014-06-26 Kikuo Sugita Method for preventing overturn of trestle
US20140345210A1 (en) * 2011-11-21 2014-11-27 Giuseppe Gentili Seismic dissipation module made up of compression-resistant spheres immersed in a variable low density material
US9145702B2 (en) * 2013-02-06 2015-09-29 Raytheon Company Friction damping mechanism for damped beams and other structures
US20170007021A1 (en) * 2014-01-24 2017-01-12 Girardini S.R.L. Dissipator
US10590670B2 (en) * 2014-01-24 2020-03-17 Marco Ferrari Dissipator
US9739336B2 (en) 2014-08-13 2017-08-22 Northrop Grumman Systems Corporation Magnetically damped isolator and pointing mount
US20180283487A1 (en) * 2015-09-30 2018-10-04 Mitsubishi Electric Corporation Base isolation unit and base isolation apparatus
US10443677B2 (en) * 2015-09-30 2019-10-15 Mitsubishi Electric Corporation Base isolation unit and base isolation apparatus
US20190145066A1 (en) * 2016-04-15 2019-05-16 Oiles Corporation Seismic isolation bearing for bridge and bridge using the same
CN105805489A (zh) * 2016-05-18 2016-07-27 浙江工业职业技术学院 一种磁悬浮式机械设备减震腿
US20190301193A1 (en) * 2018-04-03 2019-10-03 Lief MacTavish System and method to reduce accelerations experienced by objects in variable acceleration environments

Also Published As

Publication number Publication date
NZ223743A (en) 1990-08-28
JPH0514062B2 (en]) 1993-02-24
JPS63223244A (ja) 1988-09-16

Similar Documents

Publication Publication Date Title
US4883250A (en) Vibration-proof and earthquake-immue mount system
JP3761241B2 (ja) 免震装置
JP3794830B2 (ja) 免振装置
JPH0358009B2 (en])
KR19980033066A (ko) 자기조정형 진동감쇄장치
JP7211865B2 (ja) 滑り支承
JP2586794Y2 (ja) 構造物用免震支持装置
JP5352270B2 (ja) 免震構造、及び免震構造を有する建物
JP2001074093A (ja) 免震装置
JP2000266116A (ja) 揺動ベアリング式免震装置
JPH06158912A (ja) 免震装置
JP4803620B2 (ja) 制振機能付き免震構造物
JPH10317723A (ja) 免震構造物のダンパ装置
JP3803940B2 (ja) 直交２方向の建物周期が異なる超高層建物の制振装置
JP3817084B2 (ja) 免震装置
JPH0788875B2 (ja) 振動制御装置
JP3115586B2 (ja) 球状ゴム支承を使用した構造物用３次元免震装置
JPH02271137A (ja) 免震支持装置
JP2000161423A5 (en])
JP2006016935A (ja) 免震システム
JPH09273331A (ja) 建物用震動制震機構
JPH02236354A (ja) 床免震構造
JPH088363Y2 (ja) 防振装置
JP2626909B2 (ja) 免震、防振方式
JPH069234Y2 (ja) 免震装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: KAJIMA CORPORATION, 2-7, MOTOAKASAKA 1-CHOME, MINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:YANO, KENICHI;MIDORIKAWA, HIROSHI;KAMEI, TOSHIAKI;AND OTHERS;REEL/FRAME:004869/0915

Effective date: 19880301

Owner name: KAYABA INDUSTRY CO., LTD., WORLD TRADE CENTER BUIL

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:YANO, KENICHI;MIDORIKAWA, HIROSHI;KAMEI, TOSHIAKI;AND OTHERS;REEL/FRAME:004869/0915

Effective date: 19880301

Owner name: KAJIMA CORPORATION,JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YANO, KENICHI;MIDORIKAWA, HIROSHI;KAMEI, TOSHIAKI;AND OTHERS;REEL/FRAME:004869/0915

Effective date: 19880301

Owner name: KAYABA INDUSTRY CO., LTD.,JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YANO, KENICHI;MIDORIKAWA, HIROSHI;KAMEI, TOSHIAKI;AND OTHERS;REEL/FRAME:004869/0915

Effective date: 19880301

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20011128